I compile a cross compiler for target x86_64-pc-mingw32,
then use this cross compiler to compile a native compiler for
x86_64-pc-mingw32,
then use native compiler to compile cpp code, it generate following error:
------------------------------
$ /c/tools/target/bin/x86_64-pc-mingw32-g++.exe -v -Wall hello.cpp
Using built-in specs.
Target: x86_64-pc-mingw32
Configured with: ../gcc/configure --host=x86_64-pc-mingw32
--enable-languages=c,c++ --disable-nls --disable-multilib
--disable-libstdcxx-pch --enable-long-long
--with-gmp=/home/drangon/mingw/target/forgcc
--prefix=/home/drangon/mingw/target
Thread model: win32
gcc version 4.3.0 20070914 (experimental) (GCC)
COLLECT_GCC_OPTIONS='-v' '-Wall' '-mtune=generic'
c:/tools/target/bin/../libexec/gcc/x86_64-pc-mingw32/4.3.0/cc1plus.exe
-quiet -v -iprefix
c:\tools\target\bin\../lib/gcc/x86_64-pc-mingw32/4.3.0/ hello.cpp
-quiet -dumpbase hello.cpp -mtune=generic -auxbase hello -Wall
-version -o C:/DOCUME~1/drangon/LOCALS~1/Temp/ccQLaaaa.s
ignoring nonexistent directory
"c:\tools\target\bin\../lib/gcc/x86_64-pc-mingw32/4.3.0/../../../../include/c++/4.3.0"
ignoring nonexistent directory
"c:\tools\target\bin\../lib/gcc/x86_64-pc-mingw32/4.3.0/../../../../include/c++/4.3.0/x86_64-pc-mingw32"
ignoring nonexistent directory
"c:\tools\target\bin\../lib/gcc/x86_64-pc-mingw32/4.3.0/../../../../include/c++/4.3.0/backward"
ignoring nonexistent directory
"c:/tools/target/lib/gcc/../../lib/gcc/x86_64-pc-mingw32/4.3.0/../../../../include/c++/4.3.0"
ignoring nonexistent directory
"c:/tools/target/lib/gcc/../../lib/gcc/x86_64-pc-mingw32/4.3.0/../../../../include/c++/4.3.0/x86_64-pc-mingw32"
ignoring nonexistent directory
"c:/tools/target/lib/gcc/../../lib/gcc/x86_64-pc-mingw32/4.3.0/../../../../include/c++/4.3.0/backward"
ignoring nonexistent directory "/home/drangon/mingw/target/include"
ignoring nonexistent directory "/mingw/include64"
#include "..." search starts here:
#include <...> search starts here:
c:\tools\target\bin\../lib/gcc/x86_64-pc-mingw32/4.3.0/../../../../include
c:\tools\target\bin\../lib/gcc/x86_64-pc-mingw32/4.3.0/include
c:\tools\target\bin\../lib/gcc/x86_64-pc-mingw32/4.3.0/include-fixed
c:\tools\target\bin\../lib/gcc/x86_64-pc-mingw32/4.3.0/../../../../x86_64-pc-mingw32/include
c:/tools/target/lib/gcc/../../include
c:/tools/target/lib/gcc/../../lib/gcc/x86_64-pc-mingw32/4.3.0/include
c:/tools/target/lib/gcc/../../lib/gcc/x86_64-pc-mingw32/4.3.0/include-fixed
c:/tools/target/lib/gcc/../../lib/gcc/x86_64-pc-mingw32/4.3.0/../../../../x86_64-pc-mingw32/include
End of search list.
GNU C++ (GCC) version 4.3.0 20070914 (experimental) (x86_64-pc-mingw32)
compiled by GNU C version 4.3.0 20070914 (experimental), GMP
version 4.2.2, MPFR version 2.3.0.
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 952c5c349b801e679ce084d69ae4e018
hello.cpp: In function 'int main(int, char**)':
hello.cpp:9: warning: format '%d' expects type 'int', but argument 2
has type 'long long unsigned int'
hello.cpp:9: warning: format '%d' expects type 'int', but argument 3
has type 'long long unsigned int'
hello.cpp:9: warning: format '%d' expects type 'int', but argument 4
has type 'long long unsigned int'
COLLECT_GCC_OPTIONS='-v' '-Wall' '-mtune=generic'
c:/tools/target/bin/../lib/gcc/x86_64-pc-mingw32/4.3.0/../../../../x86_64-pc-mingw32/bin/as.exe
-o C:/DOCUME~1/drangon/LOCALS~1/Temp/ccwnbaaa.o
C:/DOCUME~1/drangon/LOCALS~1/Temp/ccQLaaaa.s
C:/DOCUME~1/drangon/LOCALS~1/Temp/ccQLaaaa.s: Assembler messages:
C:/DOCUME~1/drangon/LOCALS~1/Temp/ccQLaaaa.s:107: Error: unknown
pseudo-op: `.hidden'
---------------------------------------------
the cpp file is very simple :
------------------------------------------
#include <stdio.h>
int main( int argc, char * argv[] )
{
printf( "hello world.\n" );
return 0;
}
---------------------------------------
I use the following command to generate asm code from native compiler :
/c/tools/target/bin/x86_64-pc-mingw32-g++.exe -S t2.cpp
----------------------------
.file "t2.cpp"
.def ___main; .scl 2; .type 32; .endef
.section .rdata,"dr"
LC0:
.ascii "hello world.\0"
.text
.globl _main
.def _main; .scl 2; .type 32; .endef
_main:
LFB6:
pushq %rbp
LCFI0:
movq %rsp, %rbp
LCFI1:
subq $32, %rsp
LCFI2:
movl %ecx, 16(%rbp)
movq %rdx, 24(%rbp)
call ___main
leaq LC0(%rip), %rcx
call _puts
movl $0, %eax
leave
ret
LFE6:
.section .eh_frame,"dr"
Lframe1:
.long LECIE1-LSCIE1
LSCIE1:
.long 0x0
.byte 0x1
.def ___gxx_personality_v0; .scl 2; .type 32; .endef
.ascii "zPR\0"
.uleb128 0x1
.sleb128 -8
.byte 0x10
.uleb128 0x6
.byte 0x9b
.long _DW.ref.__gxx_personality_v0-.
.byte 0x1b
.byte 0xc
.uleb128 0x7
.uleb128 0x8
.byte 0x90
.uleb128 0x1
.align 8
LECIE1:
LSFDE1:
.long LEFDE1-LASFDE1
LASFDE1:
.long LASFDE1-Lframe1
.long LFB6-.
.long LFE6-LFB6
.uleb128 0x0
.byte 0x4
.long LCFI0-LFB6
.byte 0xe
.uleb128 0x10
.byte 0x86
.uleb128 0x2
.byte 0x4
.long LCFI1-LCFI0
.byte 0xd
.uleb128 0x6
.align 8
LEFDE1:
.hidden _DW.ref.__gxx_personality_v0
.globl _DW.ref.__gxx_personality_v0
.section .data$DW.ref.__gxx_personality_v0,"w"
.linkonce same_size
.align 8
_DW.ref.__gxx_personality_v0:
.quad ___gxx_personality_v0
.def _puts; .scl 2; .type 32; .endef
------------------------------------------
but if I use the cross compiler to generate code, the asm file does has
".hidden"
-bash-3.1$ ../cross/bin/x86_64-pc-mingw32-g++ -S t2.cpp
-------------------------------------------
.file "t2.cpp"
.def ___main; .scl 2; .type 32; .endef
.section .rdata,"dr"
LC0:
.ascii "hello world.\0"
.text
.globl _main
.def _main; .scl 2; .type 32; .endef
_main:
LFB6:
pushq %rbp
LCFI0:
movq %rsp, %rbp
LCFI1:
subq $32, %rsp
LCFI2:
movl %ecx, 16(%rbp)
movq %rdx, 24(%rbp)
call ___main
leaq LC0(%rip), %rcx
call _puts
movl $0, %eax
leave
ret
LFE6:
.section .eh_frame,"dr"
Lframe1:
.long LECIE1-LSCIE1
LSCIE1:
.long 0x0
.byte 0x1
.def ___gxx_personality_v0; .scl 2; .type 32; .endef
.ascii "zPR\0"
.uleb128 0x1
.sleb128 -8
.byte 0x10
.uleb128 0x6
.byte 0x9b
.long LDFCM0-.
.byte 0x1b
.byte 0xc
.uleb128 0x7
.uleb128 0x8
.byte 0x90
.uleb128 0x1
.align 8
LECIE1:
LSFDE1:
.long LEFDE1-LASFDE1
LASFDE1:
.long LASFDE1-Lframe1
.long LFB6-.
.long LFE6-LFB6
.uleb128 0x0
.byte 0x4
.long LCFI0-LFB6
.byte 0xe
.uleb128 0x10
.byte 0x86
.uleb128 0x2
.byte 0x4
.long LCFI1-LCFI0
.byte 0xd
.uleb128 0x6
.align 8
LEFDE1:
.data
.align 8
LDFCM0:
.quad ___gxx_personality_v0
.def _puts; .scl 2; .type 32; .endef
---------------------------------------------------
I have send this bug to binutils bugzilla, they said this is not the as.exe
bug.
--
Summary: native x86_64-pc-mingw32-g++.exe generate wrong asm that
x86_64-pc-mingw32-as.exe can not process
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: drangon dot mail at gmail dot com
GCC build triplet: x86_64-redhat-linux-gnu
GCC host triplet: x86_64-pc-mingw32
GCC target triplet: x86_64-pc-mingw32
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33452
